Time mechanism for dampers



(No Model.)

TIME MEGHANISM FOR- DAMPERS. 3 No. 393,063. Patented N ov.':20, 1888..- j

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WITNESSES:

PATENT .FFIcE.

JACOB FRIES, OF READING, PENNSYLVANIA.

TlME lVlECHANlSM FOR oAMPERs.

SPECIFICATION forming part of Letters Patent No. 393,063, dated November 20,1888.

Application filed April 27, 1888.

T0 at whom it may concern.-

' Be it known that I, JACOB FRIES, a citizen 'of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, haveinvented certain new and useful Improvements in Draft-Regulators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to a device adapted to automatically change the draft of a stove or furnace at any desired time It consists, essentially, of a reel or drum having cords fastened to it and connected with the stove damper or door and an alarnrclock or its'equivalent adapted to wind or unwind these cords by the revolution of its escape-wheel axis. A counter-balance is also provided to reduce the power required to effect this ob:

' ject.

Figure 1 shows my device connected with a stove. Fig. 2 is a side elevation of the bracket and drum and shows the winding-handle of the alarm-clock out of engagement with the drum. Fig. 3 is a front view of the drum and bracket and the operating-cords.

A represents a stove having a damper, A, with handle A and a lower door, 'A.

B and B are small pulleys or screw-eyes secured in the ceiling.

G and G are operating cords or wires, and C is the counterbalance-cord with weight D attached.

E represents an ordinary alarm-clock having an escapc-wheel axis, E, adapted, when wound up by means of the handle E, to be released and revolved at any desired ti me, as indicated by the hands of the clock.

F is a drum or reel supported on end bearings, F, by a bracket, G. One of the bearings F is provided with projections F between which the handle E is adapted to be inserted, so as to compel the reel to turn with it. The operating cord or cords G and O are fastened to thesurface of the reel, around which they are wound, and thence carried upward to the Serial No. 272,009. (No model.)

ceiling and over the pulleys 'B to the stove door or damper, as desired; or the pulleys may be dispensed with, if circumstances permit,

and thecords carried direct to the stove. The counterbalance-cord C is also fastened to the surface of the reel, preferably at the other end, and is wrapped around it in the reverse direction and carried upward and overthe pulley B, and has a weight, D, attached to the other end. This latter is sufficient to nearly overcome the inertia of the parts to be moved that is, the stove door or damper, or bothso that the running down of the clock may easily effect the object aimed at.

It is evident that my device may be adapted to open or close any door or damper on any variety of stove or furnace, and it may act upon as many different parts simultaneously as'may be desired. To effect this, it may in some cases be advisable to employ more than one reel,so that different counter-balances may be used to correspond with the weight of the parts. Even in such cases, however, the same clock may be made to turn all the reels if they are connected by cords or otherwise.

The operating-cords should be readily disconnected, so as to be hung out of the way when not in use, and the part nearest the stove should be wire to avoid possible burning. The alarnrclock shown, though avery convenient motor, is not required in its capacity as an alarm, and the bell may be entirely dis- Witnesses:

W. G. STEWART, Bonner L. KEITH. 

